Special transformers, toroidal and other transformers

High-current transformers work like inverted current transformers

Example of the construction of a cost-saving high-current transformer for a low-voltage tool heater. The secondary winding is formed by the cable. The transformer is clocked with the TSRLF module and a solid state relay on the 400V primary side without inrush currents, i.e. switched on every 0.5 sec. with different duty cycles.

High current transformer

10kVA transformer, 400V to 24V, for tool heating, the connection cable to the load is also the secondary winding

Point heating transformer for direct heating of the rail tongue

Each small 100VA toroidal transformer in the picture below has only one primary coil. The winding voltage is 0.14 V per transformer. The picture shows the sec. side series connection of 10 transformers

Switching examples for clocking high-current transformers with step switching for adaptation to the non-linear load

Isolating transformer without inrush current

Without electronics, without series resistor, without inrush current limiter, a transformer is gently switched on with an auxiliary winding. It can be switched as often as required in succession. The auxiliary winding does not heat up in the process. Isolating transformers are particularly suitable for this.

Isolating transformer without inrush current, without inrush current limiter, see also under single-phase transformers

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